Any preference I have for a particular barrel length usually depends on what and where I'll be hunting. I like shorter barrels for the snap shots I get for early season grouse and woodcock, and prefer longer barrels for dove and ducks. For quail, which I hunt more than any other game bird, I use all lengths. If I'm out on the prairie, I generally use the longer barrels (they seem to help me on longer crossing shots), and 28" or 26' inch in some of the tighter covers we hunt.
So, if asked if I prefer 30, 28, or 26 inch barrels, I guess I'd answer "yes."
This is all a great excuse to have more guns, right?